Question

what is the basis for the principal immunisation

Answer 1

The basic principle of immunization is that on administration of vaccine, the body starts developing antibodies against it such that person is protected form disease. Body remembers the infectious agents and memory cells are formed which can immediately produce antibodies on further exposure to the infectious agents

Answer 2

The basic principle of immunization is that on administration of vaccine, the body starts developing antibodies against it such that person is protected form disease. Body remembers the infectious agents and memory cells are formed which can immediately produce antibodies on further exposure to the infectious agents.